Tunable microwave filters with controlled ferroelectric capacitors

Zameshaeva, Evgenia; Turalchuk, Pavel; Turgaliev, Viacheslav; Odit, Mikhail; Munina, Irina; Kolmakova, I. V.; Семенов, А. А.; Vendik, I.; Vendik, O. G.

doi:10.1134/s1063785013090241

Cited by 5 publications

(2 citation statements)

References 3 publications

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“…They have been used in the microwave domain and can achieve high permittivity while maintaining an acceptable loss factor. Such suspensions have been used in microwave applications such as: variable capacitance [11], microwave phase shifters [12] and variable antenna [13]. However, they are complex to produce and maintain.…”

Section: Introductionmentioning

confidence: 99%

RF MEMS filter based on dual liquid variations

Habbachi¹,

Besbes²

2022

J. Micromech. Microeng.

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This paper discusses the behavior of RF MEMS tunable microwave filter. We have modeled the distribution of magnetic field and electric current density in order to reveal the comportment of each device and to evaluate the relation between the frequency response and the microwave performances. From several modelling and simulations, we catch the resonance phenomenon for magnetic and electric fields at different conditions. Hence, in order to develop a reconfigurable MEMS ensuring a function of tunable band-pass filters, we have identified conditions allowing to vary the resonance frequency from Fres = 0.42 GHz to Fres = 1.85 GHz ensuring a large total variation of Tr = 340.5%. The structure is fabricated using SU-8 resin for circulating microchannels and sealing layers. The extracted parameters from measurements results and retro-simulation reveal a diminution of the total tuning range.

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Section: Introductionmentioning

confidence: 99%

RF MEMS filter based on dual liquid variations

Habbachi¹,

Besbes²

2022

J. Micromech. Microeng.

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“…There are two main methods to change the parameters of striplines and coupled strip transmission lines. The first method is based on control of dielectric parameters, magnetic or magneto-dielectric medium [1][2][3][4][5]. The second method is based on the introduction of lumped heterogeneities, creating the effect of changing parameters in a limited frequencies range, as this heterogeneity creates a frequency-selective circuit [6].…”

Section: Introductionmentioning

confidence: 99%

Split striplines with adjustable parameters and devices based on them

et al. 2019

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The split strip lines (SSL) with adjustable parameters and examples of devices based on them are examined. Changing the parameters of the split strip lines are carried out with the help of so-called controlling strips, coupled with parts of the split strip line and having a strong electromagnetic coupling with them. Between controlling strips and the screen the lumped regulating elements are included. In wide frequency range such strip structures can be considered as transmission lines with changeable characteristic impedance and changeable propagation coefficient. Frequency analysis of of scattering matrix S of controlled split strip lines with different circuits of strip inclusion is carried out. Examples of the use of split strip lines with adjustable parameters in the design of different devices were discussed.

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